﻿using HeinQi.Framework.Common;
using TbShop.Web.WX;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Security;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Threading;
using System.Web;

namespace TbShop.Web.Helpers
{
    public class HttpHelper
    {
        public static string HttpGet(string url, string totken = "")
        {
            try
            {
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
                if (!string.IsNullOrWhiteSpace(totken))
                {
                    request.Headers.Add("Authorization", totken);
                }
                request.Method = "GET";
                request.ContentType = "text/html;charset=UTF-8";
                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                Stream myResponseStream = response.GetResponseStream();
                StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
                string retString = myStreamReader.ReadToEnd();
                myStreamReader.Close();
                myResponseStream.Close();
                return retString;
            }
            catch (Exception e)
            {
                return "{}";
            }
        }

        public static string HttpPost(string url, string postDataJson = "", string totken = "")
        {
            try
            {
                HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(url);
                httpWebRequest.Method = "POST";
                if (!string.IsNullOrWhiteSpace(totken))
                {
                    httpWebRequest.Headers.Add("AccessToken", totken);
                }

                byte[] postBytes = Encoding.UTF8.GetBytes(postDataJson);
                httpWebRequest.ContentType = "application/json; charset=utf-8";
                httpWebRequest.ContentLength = Encoding.UTF8.GetByteCount(postDataJson);
                Stream stream = httpWebRequest.GetRequestStream();
                stream.Write(postBytes, 0, postBytes.Length);
                stream.Close();
                httpWebRequest.Timeout = 90000;
                var response = httpWebRequest.GetResponse();
                Stream streamResponse = response.GetResponseStream();
                StreamReader streamRead = new StreamReader(streamResponse);
                string responseString = streamRead.ReadToEnd();
                response.Close();
                streamRead.Close();
                return responseString.ToString();
            }
            catch (Exception e) { return ""; }
        }


        public static string HttpXML(string xml, string url, bool isUseCert, int timeout)
        {
            System.GC.Collect();//垃圾回收，回收没有正常关闭的http连接

            string result = "";//返回结果

            HttpWebRequest request = null;
            HttpWebResponse response = null;
            Stream reqStream = null;
            try
            {
                //设置最大连接数
                ServicePointManager.DefaultConnectionLimit = 200;
                //设置https验证方式
                if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
                {
                    ServicePointManager.ServerCertificateValidationCallback =
                            new RemoteCertificateValidationCallback(CheckValidationResult);
                }

                /***************************************************************
                * 下面设置HttpWebRequest的相关属性
                * ************************************************************/
                request = (HttpWebRequest)WebRequest.Create(url);

                request.Method = "POST";
                request.Timeout = timeout * 1000;

                //设置代理服务器
                //WebProxy proxy = new WebProxy();                          //定义一个网关对象
                //proxy.Address = new Uri(WxPayConfig.PROXY_URL);              //网关服务器端口:端口
                //request.Proxy = proxy;

                //设置POST的数据类型和长度
                request.ContentType = "text/xml";
                byte[] data = System.Text.Encoding.UTF8.GetBytes(xml);
                request.ContentLength = data.Length;

                //是否使用证书
                //if (isUseCert)
                //{
                //    string path = WxPayConfig.SSLCERT_PATH;
                //    if (System.IO.File.Exists(path))
                //    {
                //        //如遇找不到证书文件问题，请参考http://stackoverflow.com/questions/1345262/an-internal-error-occurred-when-loading-pfx-file-with-x509certificate2
                //        X509Certificate cert = new X509Certificate2(path, WxPayConfig.SSLCERT_PASSWORD, X509KeyStorageFlags.MachineKeySet);
                //        request.ClientCertificates.Add(cert);
                //    }
                //    else
                //    {
                //        throw new WxPayException("缺少证书文件");
                //    }
                //}

                //往服务器写入数据
                reqStream = request.GetRequestStream();
                reqStream.Write(data, 0, data.Length);
                reqStream.Close();

                //获取服务端返回
                response = (HttpWebResponse)request.GetResponse();

                //获取服务端返回数据
                StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
                result = sr.ReadToEnd().Trim();
                sr.Close();
            }
            catch (ThreadAbortException e)
            {
                LogHelper.Error("ThreadAbortException:" + e.Message);
                Thread.ResetAbort();
            }
            catch (WebException e)
            {
                LogHelper.Error("WebException:" + e.Message);
                throw new WxPayException(e.ToString());
            }
            catch (Exception e)
            {
                LogHelper.Error("Exception:" + e.Message);
                throw new WxPayException(e.ToString());
            }
            finally
            {
                //关闭连接和流
                if (response != null)
                {
                    response.Close();
                }
                if (request != null)
                {
                    request.Abort();
                }
            }
            return result;
        }
        private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
        {
            return true;
        }
    }
}